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 Indian J Med Microbiol  
 

Figure 8: (a) Principal component analysis plot of Group 1: The first axis explains 33.33% of the variance in shape, whereas the second vertical axis explains 20.11%. (b) Group 1: The arrows show the relative facial movements in shape space of the landmark points according to the PCA plot axes

Figure 8: (a) Principal component analysis plot of Group 1: The first axis explains 33.33% of the variance in shape, whereas the second vertical axis explains 20.11%. (b) Group 1: The arrows show the relative facial movements in shape space of the landmark points according to the PCA plot axes